Linkage mechanism acting in opposite directions synchronously

ABSTRACT

A linkage mechanism acting in opposite directions synchronously disclosed in the invention comprises a driving part with an internal space and driven by an external power source; a first actuating part disposed in the internal space; and a second actuating part disposed in the internal space. When the first actuating part and the second actuating part are synchronously driven by the driving part, the first actuating part and the second actuating part are relatively displaced close to each other in opposite directions or away from each other in opposite directions. Thereby, with a linkage relationship between the first actuating part and the second actuating part that act in opposite directions, an efficacy of rapid displacement and actions can be achieved.

BACKGROUND OF THE INVENTION Field of Invention

The invention is related to a linkage mechanism, and more particularly to a linkage mechanism acting in opposite directions synchronously.

Related Art

Taiwan utility model patent “Single Motor Driven Lifting Table Leg Structure” of No. M590010 is taken as an example for argumentation, which discloses that the leg of the lifting table comprises an inner frame sleeved in an outer frame, and one end thereof is fixed on a base. The inner frame is equipped with a screw assembly, which is driven by a power device and drives the outer frame to displace relative to the inner frame, so that a table plate located above the table leg can ascend and descend. However, because a stroke of the screw assembly for driving the outer frame to displace is very long and the stroke feed is very slow, it takes a long time to drive the table plate to ascend or descend, resulting in the problem of being unable to ascend and descend rapidly and to move quickly.

SUMMARY OF THE INVENTION

Therefore, a main object of the invention is to provide a linkage mechanism acting in opposite directions synchronously, which utilizes a linkage relationship between a first actuating part and a second actuating part that act in opposite directions, thereby an efficacy of rapid displacement and actions can be achieved.

In order to achieve the above-mentioned object, the invention provides a linkage mechanism acting in opposite directions synchronously comprising a driving part with an internal space and driven by an external power source; a first actuating part disposed in the internal space; and a second actuating part disposed in the internal space. When the first actuating part and the second actuating part are synchronously driven by the driving part, the first actuating part and the second actuating part are relatively displaced close to each other in opposite directions or away from each other in opposite directions.

For example, the driving part has a rotating member, an interior of the rotating member forms the internal space, when the rotating member is driven by the power source to rotate, the first actuating part and the second actuating part are synchronously linked to act and displace.

Wherein, the rotating member comprises a first sleeve shaft driven by the power source to rotate; and a second sleeve shaft inserted inside the first sleeve shaft and driven by the first sleeve shaft.

Wherein, wall surfaces where the first sleeve shaft and the second sleeve shaft abut each other are respectively provided with protrusions and recesses that are complementary to each other in concave and convex manners, so that a linkage relationship is formed between the first sleeve shaft and the second sleeve shaft.

Wherein, the first actuating part comprises a first rod slidably accommodated in the second sleeve shaft, and a hollow cavity communicating externally is provided along an axial direction of the first rod; and a first connecting member provided between the first rod and the second sleeve shaft, and the first rod is capable of displacing relative to the second sleeve shaft.

Wherein, the second actuating part comprises a second rod, the second rod is partially or entirely slidably accommodated in the second sleeve shaft and the hollow cavity; and a second connecting member disposed between the second rod and the second sleeve shaft, and the second rod is capable of displacing relative to the second sleeve shaft. Thereby, the second rod can be slidably disposed in the hollow cavity of the first rod, which further improves the stability of connection and relationship of actions between each other.

Wherein, rod bodies of the first rod and the second rod respectively have screw threads disposed in opposite directions.

In one embodiment, the invention further comprises a first sleeve column with an appropriate length and connected to one end of the first rod; a second sleeve column reciprocatively slidably disposed in the first sleeve column and connected with the first connecting member; and a third sleeve column reciprocatively slidably disposed in the second sleeve column and connected with one end of the second rod away from the first rod.

Further, the first connecting member comprises a first seat disposed between the second sleeve column and the second sleeve shaft; a first accommodating chamber recessed in one side of the first seat; a first through hole penetrating the first seat and communicating with the first accommodating chamber for the first rod to insert into; and a first bushing provided at one end of the second sleeve shaft, rotatably located in the first accommodating chamber, and screwed on the first rod, and capable of displacing linearly reciprocatively along an axial direction of the first rod.

The second connecting member comprises a second seat disposed between the third sleeve column and the first rod; a second accommodating chamber recessed in one side of the second seat for accommodating one end of the first rod; a second through hole penetrating the second seat and communicating with the second accommodating chamber for the second rod to insert into; and a second bushing disposed at another end of the second sleeve shaft away from the first bushing, and screwed on the second rod, and capable of displacing linearly reciprocatively along an axial direction of the second rod.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a first embodiment of the invention;

FIG. 2 is an exploded view of the first embodiment of the invention;

FIG. 3 is a first partial exploded view of the first embodiment of the invention, showing a third sleeve column, a first sleeve shaft and a second connecting member;

FIG. 4 is a second partial exploded view of the first embodiment of the invention, showing a second sleeve shaft, a first rod and a first connecting member;

FIG. 5 is a cross-sectional view of the first embodiment of the invention along section line 5-5 of FIG. 1;

FIG. 6 is a first partial enlarged view of FIG. 5 in the first embodiment of the invention, showing disposition relationships between the first sleeve shaft, the second sleeve shaft, a second bushing and a second rod;

FIG. 7 is a second partial enlarged view of FIG. 5 in the first embodiment of the invention, showing disposition relationships between the first sleeve shaft, the second sleeve shaft, the second connecting member, the first rod, the second rod, a second sleeve column and the third sleeve column;

FIG. 8 is a third partial enlarged view of FIG. 5 in the first embodiment of the invention, showing disposition relationships between the second sleeve shaft, the first connecting member, the second rod, a first sleeve column and the second sleeve column; and

FIG. 9 is an action diagram of FIG. 5 in the first embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

First of all, please refer to FIGS. 1 to 8. A linkage mechanism acting in opposite directions synchronously provided in a first embodiment of the invention comprises a driving part 10, a first actuating part 20, a second actuating part 30, a first sleeve column 40, a second sleeve column 50, and a third sleeve column 60.

The driving part 10 has an internal space 11 for accommodating the first actuating part 20 and the second actuating part 30 partially or entirely. When being driven by an external power source 70, the driving part 10 is capable of driving the first actuating part 20 and the second actuating part 30 to displace relatively close to each other in opposite directions or away from each other in opposite directions. Specifically, the driving part 10 has a rotating member 12, an interior of the rotating member 12 forms the internal space 11, when the rotating member 12 is driven by the power source 70 to rotate, the first actuating part 20 and the second actuating part 30 are synchronously linked to act and displace. In this embodiment, the rotating member 12 comprises a first sleeve shaft 13 driven by the power source 70 to rotate, and a second sleeve shaft 14 inserted inside the first sleeve shaft 13. Wherein, wall surfaces where the first sleeve shaft 13 and the second sleeve shaft 14 abut each other are respectively provided with protrusions 131 and recesses 141 that are complementary to each other in concave and convex manners, so that the second sleeve shaft 14 and the first sleeve shaft 13 are capable of actuating synchronously.

The first actuating part 20 comprises a first rod 21 slidably accommodated in the second sleeve shaft 14, and a hollow cavity 211 communicating externally is provided along an axial direction of the first rod 21; and a first connecting member 22 disposed between the first rod 21 and the second sleeve shaft 14, and the first rod 21 is capable of displacing relative to the second sleeve shaft 14.

The second actuating part 30 comprises a second rod 31, the second rod 31 is partially or entirely slidably accommodated in the second sleeve shaft 14 and the hollow cavity 211; and a second connecting member 32 disposed between the second rod 31 and the second sleeve shaft 14, and the second rod 31 is capable of displacing relative to the second sleeve shaft 14. Wherein, rod bodies of the first rod 21 and the second rod 31 respectively have screw threads 23, 33 disposed in opposite directions.

The first sleeve column 40, the second sleeve column 50, and the third sleeve column 60 are connected by sleeving with one another in sequence with the first sleeve column 40 sleeving around the second sleeve column 50, and the second sleeve column 50 sleeving around the third sleeve column 60, and respectively have an appropriate length. Wherein, the first sleeve column 40 is connected to one end of the first rod 21, the second sleeve column 50 is connected to the first connecting member 22, and the third sleeve column 60 is connected to one end of the second rod 31 away from the first rod 21.

Further, the first connecting member 22 comprises a first seat 221 disposed between the second sleeve column 50 and the second sleeve shaft 14; a first accommodating chamber 222 recessed in one side of the first seat 221; a first through hole 223 penetrating the first seat 221 and communicating with the first accommodating chamber 222 for the first rod 21 to insert into; and a first bushing 224 provided at one end of the second sleeve shaft 14, rotatably located in the first accommodating chamber 222, and screwed on the first rod 21, and capable of displacing linearly reciprocatively along an axial direction of the first rod 21.

Furthermore, the second connecting member 32 comprises a second seat 321 disposed between the third sleeve column 60 and the first rod 21; a second accommodating chamber 322 recessed in one side of the second seat 321 for accommodating one end of the first rod 21; a second through hole 323 penetrating the second seat 321 and communicating with the second accommodating chamber 322 for the second rod 31 to insert into; and a second bushing 324 disposed at another end of the second sleeve shaft 14 away from the first bushing 224, and screwed on the second rod 31, and capable of displacing linearly reciprocatively along an axial direction of the second rod 31.

In addition, a table plate is further fixed at one end of the third sleeve column 60, so that the table plate is capable of achieving an effect of ascending and descending quickly through the invention.

With combination of the above-mentioned components, actual actions of the linkage mechanism acting in opposite directions synchronously disclosed in the invention are as follows. Firstly, as shown in FIG. 5, each of the components is located at an initial position. Then, when a user adjusts a height of the table plate according to requirements, the power source 70 drives the first sleeve shaft 13 to rotate, and synchronously drives the second sleeve shaft 14 to rotate, and with disposition of the first bushing 224 and the second bushing 324, the first rod 21 and the second rod 31 are linked to move away from the second sleeve shaft 14 synchronously and outwardly, thereby the first sleeve column 40 and the third sleeve column 60 are respectively moved away from the second sleeve column 50 to adjust a distance between the first sleeve column 40 and the third sleeve column 60 synchronously, as shown in FIG. 9, in order to achieve an efficacy of accelerating stroke feed and saving time.

It is to be understood that the above description is only the embodiments of the invention and is not used to limit the present invention, and changes in accordance with the concepts of the present invention may be made without departing from the spirit of the present invention, for example, the equivalent effects produced by various transformations, variations, modifications and applications made to the configurations or arrangements shall still fall within the scope covered by the appended claims of the present invention. 

What is claimed is:
 1. A linkage mechanism acting in opposite directions synchronously comprising: a driving part with an internal space and driven by an external power source; a first actuating part disposed in the internal space; and a second actuating part disposed in the internal space, when the first actuating part and the second actuating part being synchronously driven by the driving part, the first actuating part and the second actuating part relatively displacing close to each other in opposite directions or away from each other in opposite directions.
 2. The linkage mechanism acting in opposite directions synchronously as claimed in claim 1, wherein the driving part has a rotating member, an interior of the rotating member forms the internal space, when the rotating member is driven by the power source to rotate, the first actuating part and the second actuating part are synchronously linked to act and displace.
 3. The linkage mechanism acting in opposite directions synchronously as claimed in claim 2, wherein the rotating member comprises: a first sleeve shaft driven by the power source to rotate; and a second sleeve shaft inserted inside the first sleeve shaft and driven by the first sleeve shaft.
 4. The linkage mechanism acting in opposite directions synchronously as claimed in claim 3, wherein wall surfaces where the first sleeve shaft and the second sleeve shaft abut each other are respectively provided with protrusions and recesses that are complementary to each other in concave and convex manners.
 5. The linkage mechanism acting in opposite directions synchronously as claimed in claim 3, wherein the first actuating part comprises: a first rod slidably accommodated in the second sleeve shaft, and a hollow cavity communicating externally is provided along an axial direction of the first rod; and a first connecting member provided between the first rod and the second sleeve shaft, and the first rod is capable of displacing relative to the second sleeve shaft.
 6. The linkage mechanism acting in opposite directions synchronously as claimed in claim 5, wherein the second actuating part comprises: a second rod, the second rod is partially or entirely slidably accommodated in the second sleeve shaft and the hollow cavity; and a second connecting member disposed between the second rod and the second sleeve shaft, and the second rod is capable of displacing relative to the second sleeve shaft.
 7. The linkage mechanism acting in opposite directions synchronously as claimed in claim 6, wherein rod bodies of the first rod and the second rod respectively have screw threads disposed in opposite directions.
 8. The linkage mechanism acting in opposite directions synchronously as claimed in claim 6, further comprising: a first sleeve column with an appropriate length and connected to one end of the first rod; a second sleeve column reciprocatively slidably disposed in the first sleeve column and connected with the first connecting member; and a third sleeve column reciprocatively slidably disposed in the second sleeve column and connected with one end of the second rod away from the first rod.
 9. The linkage mechanism acting in opposite directions synchronously as claimed in claim 8, wherein the first connecting member comprises: a first seat disposed between the second sleeve column and the second sleeve shaft; a first accommodating chamber recessed in one side of the first seat; a first through hole penetrating the first seat and communicating with the first accommodating chamber for the first rod to insert into; and a first bushing provided at one end of the second sleeve shaft, rotatably located in the first accommodating chamber, and screwed on the first rod, and capable of displacing linearly reciprocatively along an axial direction of the first rod.
 10. The linkage mechanism acting in opposite directions synchronously as claimed in claim 9, wherein the second connecting member comprises: a second seat disposed between the third sleeve column and the first rod; a second accommodating chamber recessed in one side of the second seat for accommodating one end of the first rod; a second through hole penetrating the second seat and communicating with the second accommodating chamber for the second rod to insert into; and a second bushing disposed at another end of the second sleeve shaft away from the first bushing, and screwed on the second rod, and capable of displacing linearly reciprocatively along an axial direction of the second rod. 